Here in the Memphis TN area, I got pretty much in the habit of watering just before sundown - which is backwards to what most have said here.
We have considerable humidity, but that doesn't stop wilting during the day. In the mornings everything is wet on the surface no matter what, and the object is to get water on everything so that during the day there is a reserve of water. Soil dries out quick here. But I avoid watering more frequently than every other day. I've seen it ninety degrees still, hours after the sun goes down. The humidity tends to hold the temperature a lot longer than you would find in a dry climate. It's a lot like living in the Tropics! Until november...
In the winter the temperatures drop right down into the twenties.
That is all going to change, I think. I'm using lot's of black plastic for the first time, and I really don't know what to expect.
Will it hold water in? Will it cause problems getting water into the soil? Will it generate too much heat around the plants? I dunno.
The plants DID seem to like being sprayed with water last year, I never saw any rot to speak of. Lots of drooping leaves after mid-afternoon though - letting the sun lower and misting them seemed to snap them right back. We're talking a hundred or more in the shade...
It's already been above eighty a few times and it's going to be hot for nine more months. I guess I'll have to see what comes.
OH! And on the pumpkins: I hope you have LOT'S OF SPACE...
I did pumpkin last year, and some of those vines topped out at over forty feet long! Every time I thought I had tilled enough, they ran out to the edge of the garden plot and were heading out into the lawn, I'm not kidding even a tiny bit!
Pumpkin vines will grow in a sort of "Christmas Tree" pattern, spreading out from the beginning of the vine and reaching farther and farther. If I did them again, I would pick two spots about thirty feet apart, drop one seed in each place, and train the vines to a point about fifteen feet to one side of eachother. Think "Overlapping or Adjacent Triangles".
They really do get humongous!
Le Revanchist du Finances
There is no such thing as a "STUPID QUESTION"
~ Unless you or I fail to ask it in time...